[R] newbie questions on clustering

[Pauline Gu]

Hello, R-experts,

I have a data set of 4071 rows with 20 columns, each row is some specific 
subject that I am interested in, and each column is a set of conditions 
that I need to do the test on the subject.  Suppose in two of my columns I 
have one condition with Ca, and another condition without Ca.  Now, I would 
like to do a plot with X-axis being the one with Ca, and Y-axis being the 
one without Ca.  Inside this graph, I would like to see a group of my 
subject for Ca dependent, and another group for Ca independent, and another 
group with no Ca effect, and another group with mutual effect.  I assume 
that I need to use some sort of clustering, or rpart, but I looked at the 
documentation, but, I do not find anything similar.  Can anyone instruct me 
on how I can achive this?  Thank you in advance for your kindness help.

Pauline

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